{
  "id": "visa/schengen-90-day-reset-day-trip",
  "signature": "AI tells a visa-free traveler (US, UK, CA) that leaving the Schengen area for a day (e.g., to London or Morocco) resets the 90-day clock",
  "signature_zh": "AI告诉免签旅行者（美国、英国、加拿大）离开申根区一天（例如去伦敦或摩洛哥）会重置90天时钟",
  "regex": "(?i)(Schengen|Schengen area|90/180).*(reset|day trip|London|Morocco|short trip)",
  "domain": "visa",
  "category": "immigration_risk",
  "subcategory": null,
  "root_cause": "The Schengen 90/180 rule counts days of physical presence in the Schengen area; leaving for a day trip to a non-Schengen country (e.g., UK, Morocco, Croatia before it joined Schengen) does NOT reset the 90-day counter because the day of departure and return are both counted as full days spent in Schengen. Only a continuous absence of at least 90 days resets the rolling window.",
  "root_cause_type": "generic",
  "root_cause_zh": "申根90/180规则计算在申根区实际停留的天数；离开一天前往非申根国家（例如英国、摩洛哥、克罗地亚在加入申根前）不会重置90天计数器，因为离境日和返回日都算作在申根区停留的完整天数。只有连续至少90天的缺席才能重置滚动窗口。",
  "versions": [
    {
      "version": "Schengen Borders Code 2025",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "EU Regulation 2018/1806",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Schengen Handbook 2025",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "The day of departure from Schengen and the day of return are both counted as full Schengen days. For example, if the traveler has been in Schengen for 89 days, a day trip to London does not reduce the count; they will still be at 89 or 90 days upon return.",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Same logic applies: the days of departure and return are counted. A weekend trip may only reduce the count by 1 or 2 days if the traveler stays overnight outside Schengen, but the overall 90-day limit is not reset.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "The 90/180 rule is based on a rolling window; any absence under 90 days does not reset the clock. The traveler must remain outside Schengen for at least 90 consecutive days to reset.",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Use the EU's official Schengen calculator (ec.europa.eu/short-stay-calculator) to track days accurately. Plan departures to ensure total stay does not exceed 90 days in any 180-day window.",
      "success_rate": 0.95,
      "how": "Use the EU's official Schengen calculator (ec.europa.eu/short-stay-calculator) to track days accurately. Plan departures to ensure total stay does not exceed 90 days in any 180-day window.",
      "condition": "",
      "sources": []
    },
    {
      "action": "If the traveler needs to stay longer, apply for a national long-stay visa (D visa) from a Schengen country before travel, which allows stays beyond 90 days for specific purposes (e.g., work, study, family reunification).",
      "success_rate": 0.6,
      "how": "If the traveler needs to stay longer, apply for a national long-stay visa (D visa) from a Schengen country before travel, which allows stays beyond 90 days for specific purposes (e.g., work, study, family reunification).",
      "condition": "",
      "sources": []
    },
    {
      "action": "For frequent travelers, maintain a log of entry/exit dates and use the calculator to plan trips. Avoid relying on day trips to extend stays.",
      "success_rate": 0.9,
      "how": "For frequent travelers, maintain a log of entry/exit dates and use the calculator to plan trips. Avoid relying on day trips to extend stays.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "使用欧盟官方申根计算器（ec.europa.eu/short-stay-calculator）准确跟踪天数。计划离境以确保在任何180天窗口内总停留不超过90天。",
    "如果旅行者需要停留更长时间，在旅行前从申根国家申请国家长期签证（D签证），该签证允许出于特定目的（例如工作、学习、家庭团聚）停留超过90天。",
    "对于频繁旅行者，记录入境/离境日期并使用计算器规划行程。避免依赖一日游来延长停留。"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://ec.europa.eu/short-stay-calculator/",
  "official_doc_section": null,
  "error_code": "SCHENGEN-90-RESET-001",
  "verification_tier": "ai_generated",
  "confidence": 0.89,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-07-22",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}